This was one of the first books I read when I started reading books on finance. I need to read it again! Having multiple sources of income is very important especially in today's economy where employees are having to work longer hours to make enough to provide for their family. The price of goods are going up all around us, while major companies are using "shrinkflation" to get around increasing prices on goods. I went to the convenient store the other day and I remember they used to have 32oz Gatorade for $1.89 and then 2/$3. They then created a 28oz Gatorade and charged the same price as the 32oz Gatorade previously was.